Homozygous Baxtm1Sjk mice display aberrant apoptosis with hyperplasia displayed in various tissues, including thymocytes, B cells, and cells of the reproductive organs.
Dr. Stanley J. Korsmeyer, Dana-Farber Cancer Institute
Mice homozygous for the Baxtm1Sjk mutation are viable but display lineage-specific aberrations in cell death. Thymocytes and B cells from homozygous mutant mice display hyperplasia. Ovaries contain unusual atretic follicles with excess granulosa cells while Bax-deficient males are infertile. There is an accumulation of atypical premeiotic germ cells and no mature haploid sperm found in seminiferous tubules. Multinucleated giant cells and dysplastic cells accompany massive cell death.
Used in conjunction with strain B6.129-Bak1tm1Thsn/J (see Stock No. 004183), to generate the double knock-out Bak/Bax, a model for demonstrating severe defects in the regulation of apoptosis during development and tissue homeostasis.
Coat color of Baxtm1Sjk mice
The coat color loci tyrosinase (Tyr) and pink-eyed dilution (p) are linked to the Bcl2-associated X protein (Bax) gene. According to backcross data from the Mouse Genome Database, Bax is at 23.00 cM, p is at 28.00 cM, and Tyr is at 44.00 cM on chromosome 7. The targeted disruption of the Bax gene was performed in a 129-derived RW-4 ES cell line (Aw/Aw p Tyrc-ch/p Tyrc) and has been backcrossed 8 generations to C57BL/6 (a/a +p +Tyr-c/+p +Tyr-c; nonagouti black). Statistically, C57BL/6J-Baxtm1Sjk mice (Stock No. 002994) should be 99.6% C57BL/6-like at all loci not linked to the Bax gene. At the present time The Jackson Laboratory's colony of C57BL/6J-Baxtm1Sjkmice are stillsegregating at the Tyr locus and retain the p allele from the 129 ES cell line. Thus, matings of Bax heterozygous (+/-) mice may produce progeny of varying coat color including black, white, chinchilla, light chinchilla, or grey, with all but the black mice having pink eyes. Because the potential for crossover between the p and Bax loci is small (roughly 5%), progeny that are grey in color and have pink eyes most likely are homozygous for the targeted Bax gene (-/-). However, we strongly recommend that you confirm the genotype of the mice prior to using them for research purposes. The Jackson Laboratory is continuing to backcross the Bax targeted mutation to C57BL/6J to try to eliminate the recessive 129 alleles of Tyr and p. However, in an effort to make these mice available to the research community as soon as possible we will begin distribution of the current colony. To summarize, the C57BL/6J-Baxtm1Sjkmice (Stock No. 002994) have been backcrossed 8 generations to the C57BL/6J inbred strain. However, because of coat color genes linked to the Bax mutation breeder pairs supplied by The Jackson Laboratory may produce progeny of varying coat color.
A Bax targeting vector substituted PGK-Neo for exons 2 through 5, deleting BH1 and BH2 and the capacity for a functional protein.
|Allele Name||targeted mutation 1, Stanley J Korsmeyer|
|Allele Type||Targeted (Null/Knockout)|
|Allele Synonym(s)||Bax1; Bax-|
|Gene Symbol and Name||Bax, BCL2-associated X protein|
|Strain of Origin||129X1/SvJ|
|Molecular Note||A neomycin selection cassette replaced exons 2 through 4 and part of exon 5, which encode sequences that correspond to the two BCL2 homology domains BH1 and BH2. Immunoblots did not detect the endcoded protein in tissue lysates derived from homozygous mice.|
|Mutations Made By|| |
Dr. Stanley Korsmeyer, Dana-Farber Cancer Institute
The strain is maintained through heterozygous matings. BAX-deficient males are infertile and females are extremely poor breeders. Expected coat color from breeding:Black,Beige,Albino,Gray
The average number of mice provided from recovery of our cryopreserved strains is 10. The total number of animals provided,
their gender and genotype will vary. We will fulfill your order by providing at least two pair of mice, at least one animal of
each pair carrying the mutation of interest. Please inquire if larger numbers of animals with specific genotype and genders
are needed. Animals typically ship between 10 and 14 weeks from the date of your order. If a second cryorecovery is needed in
order to provide the minimum number of animals, animals will ship within 25 weeks.
The genotypes of animals provided may not reflect the mating scheme utilized by The Jackson Laboratory prior to cryopreservation, or that discussed in the strain description. Please inquire about possible genotypes which will be recovered for this specific strain. The Jackson Laboratory cannot guarantee the reproductive success of mice shipped to your facility. If the mice are lost after the first three days (post-arrival) or do not produce progeny at your facility, a new order and fee will be necessary.
Cryorecovery to establish a Dedicated Supply for greater quantities of mice. Mice recovered can be used to establish a dedicated colony to contractually supply you mice according to your requirements. Price by quotation.
Terms are granted by individual review and stated on the customer invoice(s) and account statement. These transactions are payable in U.S. currency within the granted terms. Payment for services, products, shipping containers, and shipping costs that are rendered are expected within the payment terms indicated on the invoice or stated by contract. Invoices and account balances in arrears of stated terms may result in The Jackson Laboratory pursuing collection activities including but not limited to outside agencies and court filings.
The Jackson Laboratory has rigorous genetic quality control and mutant gene genotyping programs to ensure the genetic background of JAX® Mice strains as well as the genotypes of strains with identified molecular mutations. JAX® Mice strains are only made available to researchers after meeting our standards. However, the phenotype of each strain may not be fully characterized and/or captured in the strain data sheets. Therefore, we cannot guarantee a strain's phenotype will meet all expectations. To ensure that JAX® Mice will meet the needs of individual research projects or when requesting a strain that is new to your research, we suggest ordering and performing tests on a small number of mice to determine suitability for your particular project.
"MICE" means mouse strains, their progeny derived by inbreeding or crossbreeding, unmodified derivatives from mouse strains or their progeny supplied by The Jackson Laboratory ("JACKSON"). "PRODUCT(S)" means biological materials supplied by JACKSON, and their derivatives. "SERVICES" means projects conducted by JACKSON for other parties that may include but are not limited to the use of MICE or PRODUCTS. "RECIPIENT" means each recipient of MICE, PRODUCTS, or SERVICES provided by JACKSON including each institution, its employees and other researchers under its control. MICE or PRODUCTS shall not be: (i) used for any purpose other than internal research, (ii) sold or otherwise provided to any third party for any use, or (iii) provided to any agent or other third party to provide breeding or other services. Acceptance of MICE, PRODUCTS or SERVICES from JACKSON shall be deemed as agreement by RECIPIENT to these conditions, and departure from these conditions requires JACKSON’s prior written authorization.
MICE, PRODUCTS AND SERVICES ARE PROVIDED "AS IS". JACKSON EXTENDS NO WARRANTIES OF ANY KIND, EITHER EXPRESS, IMPLIED, OR STATUTORY, WITH RESPECT TO MICE, PRODUCTS OR SERVICES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, OR ANY WARRANTY OF NON-INFRINGEMENT OF ANY PATENT, TRADEMARK, OR OTHER INTELLECTUAL PROPERTY RIGHTS.
In case of dissatisfaction for a valid reason and claimed in writing by a purchaser within ninety (90) days of receipt of, PRODUCTS or SERVICES, JACKSON will, at its option, provide credit or replacement for the PRODUCT received or the SERVICES provided; JACKSON makes no other representations and this shall be the exclusive remedy of the purchaser. Please note specific policy for live mice.
Consistent with the requirement for a written understanding regarding animal care and use, the JACKSON Animal Care and Use Committee will review the animal care and use protocol(s) associated with any SERVICES to be performed at JACKSON, and JACKSON shall have ultimate responsibility and authority for the care of animals while on site or in JACKSON custody.
In no event shall JACKSON, its trustees, directors, officers, employees, and affiliates be liable for any causes of action or damages, including any direct, indirect, special, or consequential damages, arising out of the provision of MICE, PRODUCTS, or SERVICES, including economic damage or injury to property and lost profits, and including any damage arising from acts or negligence on the part of JACKSON, its agents or employees. Unless prohibited by law, in purchasing or receiving MICE, PRODUCTS, or SERVICES from JACKSON, purchaser or recipient, or any party claiming by or through them, expressly releases and discharges JACKSON from all such causes of action or damages, and further agrees to defend and indemnify JACKSON from any costs or damages arising out of any third party claims.
MICE, PRODUCTS or SERVICES are to be used in a safe manner and in accordance with all applicable governmental rules and regulations.
The foregoing represents the General Terms and Conditions applicable to JACKSON’s MICE, PRODUCTS or SERVICES. In addition, special terms and conditions of sale of certain MICE, PRODUCTS, or SERVICES may be set forth separately in JACKSON web pages, catalogs, price lists, contracts, and/or other documents, and these special terms and conditions shall also govern the sale of these MICE, PRODUCTS and SERVICES by JACKSON, and by its licensees and distributors.
Acceptance of delivery of MICE, PRODUCTS or SERVICES shall be deemed agreement to these terms and conditions. No purchase order or other document transmitted by purchaser or recipient that may modify the terms and conditions hereof, shall be in any way binding on JACKSON, and instead the terms and conditions set forth herein, including any special terms and conditions set forth separately, shall govern the sale of MICE, PRODUCTS or SERVICES by JACKSON.